Optical measurements of spin polarization in a 2D electron system with g-factor tunable through zero

Authors
Huard, V Lovisa, S Cox, RT Saminadayar, K Potemski, M Arnoult, A Cibert, J Tatarenko, S Wasiela, A
Citation
V. Huard et al., Optical measurements of spin polarization in a 2D electron system with g-factor tunable through zero, PHYSICA B, 258, 1998, pp. 136-140
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
258
Year of publication
1998
Pages
136 - 140
Database
ISI
SICI code
0921-4526(199812)258:<136:OMOSPI>2.0.ZU;2-D
Abstract
The spin polarization of a 2D electron gas is studied for values of the Lan dau filling factor v around unity in a CdTe (0.22% Mn) quantum well with g- factor tunable through zero. Anomalies in the circular polarization of the trion absorption for filling factor v < 1 might be due to skyrmion excitati ons. In this hypothesis, as the g-factor increases, the number of reversed spins per skyrmion decreases from 9 to 1. (C) 1998 Elsevier Science B.V. Al l rights reserved.